FR-SE - Over Voltage (Converter) Error
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  1. #1
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    Default FR-SE - Over Voltage (Converter) Error

    Hi Brains trust.

    trying to resolve an intermittent error with the FR-SE-2 spindle drive.

    The drive is tripping out on over Voltage (Converter) somewhat randomly.

    A week or so ago, I was in the middle of a cut and had the spindle drive trip on over voltage.

    I checked the waveforms and found 1 Waveform missing so I have ordered replacement DK434 driver chips and installed it today.

    Waveforms looks fine, including the response times etc.

    I ran the usual warm up cycle and all went fine.

    Then while running a very light cut (3000rpm - 12mm tool - 0.1mm/tooth feed - 1mm stepover/ 4mm DOC, it tripped out again on over voltage.

    I reset it and reran the cut again (sped up through air cutting)and it tripped again.

    I dropped the spindle speed to 2500 and feed down a bit also and it managed to complete the cycle ~ 25 mins.

    Then while I was thinking about the next test to debug the problem (with the spindle stopped and in home position), the error occurred again with the spindle stationary.


    I've had a look around and can't seem to find much on this.

    Has anyone come across this error and resolved it or have any suggestions on where to look?



    Cheers

    Mick

  2. #2
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    Replace all capacitors.

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  4. #3
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    Quote Originally Posted by benganboll View Post
    Replace all capacitors.
    I have only recently replaced them all. Maybe the joints weren't so great. Will revisit this as a starting point. Thanks mate.
    Cheers

    Mick

    Sent from my SM-G930F using Tapatalk

  5. #4
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    Default

    Quote Originally Posted by sophtayl View Post
    I have only recently replaced them all. Maybe the joints weren't so great. Will revisit this as a starting point. Thanks mate.
    Cheers

    Mick

    Sent from my SM-G930F using Tapatalk
    You could also try to set the decel time a bit longer.

  6. #5
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    Default

    could be belt slippage

  7. #6
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    It may be time for new power blocks ("darlington transistors" in the FR-SE's) in the drive's base....

    You can source them new via Ebay.

    I have had luck upgrading the darlington's to actual IGBT's. As long as the physical size/shape is the same, it seems the electrical specs are close enough (actually faster/stronger) for the IGBT's to work fine.

    ToolCat

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